Topics: Modals for Advice, Obligation/Prohibition, Necessity and Lack of Necessity
In which sentence can’t you substitute must with have to?
A. You must register online before you can make a purchase.
B. I haven’t seen my grandma since Christmas. I must see her soon.
C. You must answer all the questions on the test.
D. Claire must wear glasses for driving.
Select your answer:

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I have been working as a software engineer for the past five years. My ________ is very demanding, but I enjoy it.
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